Question

Answer -

Let ,
a=13cm,
b=14cm and c=15cm.

Now,
s = a+b+c /2

= 13 + 14 + 15 /2

= 21 cm

Area:
△= √s(s−a)(s−b)(s−c)
= √21(21−13)(21−14)(21−15)
​ = √21×8×7×6
= √7×3×2×2×2×7×2×3
​ = 2×2×3×7

= 84cm^2
or 84 square centimetre..


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Answer 1

Answer:

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